Mixing valve



Dec. 30, 1941. E ROY N, HERMANN/ 2,267,976

MIXING VALVE Filed sept. 6, 1938 2 sheets-sheet 1 igi ,//ZMW Y,

. Dec. 30,1941.-

LE ROYN. HERMANN f 'MIXING VALVEv Filed-Sept. 6, 1938 I 2 sheets-sheet 2 I Patented Dec.; 30g, 194i UNlTEo STATES PATENT ol-FlcE MIXING VALVE A Le Roy N.` Hermann, Chicago, Ill. Application september s, 193s, serial No. 228,519 24 claims. (cl. 29e- 12) This invention has to do with a mixing valve and relates particularly to such a valve for mixing iiuids of ldifferent temperatures and controlling the temperature and volumetric ow of the iiuids mixed thereby.

'Ihe primary object of the present invention is the provision of an improved automatic faucet or valve device for receiving fluids respectively from relatively hot and cold iiuid sources, the device being settable to pre-select the volume and temperature of the mixture discharged therefrom and being operable upon av change in the temperature-and/or pressure of fluid received from either of these sources to eect an adjustment so that the temperature and disbodiment of my invention with reference to the accompanying two sheets of drawings constituting a part of this specification, and wherein:

charge rate of said mixture will remain substantially in accordance with said setting.

Another object of this invention is the provision of a new fluid mixing device as the above wherein'a single control member is -employed for selectively setting the device in accordance with a desired specified volume and temperature of the uid mixture discharged therefrom.

AStill another object of the present invention is the provision of a uid'mixing device for mix` ing uids of different temperature andwherein the structure is so designed and arranged as to prevent cross ow`of uid from either of the iiuid I supply sources to the other whether the device is in-or out of operation.

A further object of the present invention is the provision in a uid mixing device of a novel type of shut-off valve member operable by a sininlet fluids to further compensatorily regulate A the ow capacity of said ports. Y

An additional object of this invention is the provision of a mixing valve comprisingthermostatically and pressure controlled apparatus forA receiving and mixing different temperature fluids, and operable independently of a primary flow-control valve means.

The above and other desirabe objects of this invention will become apparent when reading the following description of the preferred em- Fig. 1 is a sectional view taken axially through a mixing valve embodying the preferred form of this invention, and taken on the line I-I of Fie. 2

Fig. 2 is a transverse sectional view-taken on the line 2-2 of Fig. l; y

Fig. 3 is a fragmentary sectional view taken on the line 3-3 of Flg'.1;

Fig. 41s a perspective view of a'gasket member employed Vin the device;

Fig. 5 is an interior development taken on the line5'-5ofFig.2; i

Fig. 6 is a view taken similarly to Fig. 5, and

illustrating the valve means when moved to anextremity of adjustment providing for a maximum flow of cold fluid and no flow of'hot fluid; Fig. 7 is a view taken similarly to Fig. 5 and illustrating the valve means when moved to an Y extremity of adjustment opposite to that illustrated in Fig. 6 and providing for a maximum ow of hot uid and no flow of cold fluid;

Fig. 8 is a view taken similarly to Fig. 5 but illustrating the valve means at an extreme limit of adjustment assumed because of complete failure of pressure at the source of cold fluid for admittance into the device;

Fig. 9 is a, view similar lo Fig. a but illustrating'. v

the valve means at the opposite extreme limit of adjustment assumed because of complete failure of pressure at the source of hot iiuid for admittance into the device; and

Fig. 10 is a fragmentary view taken similarly to Fig. 5 b'utillustrating valve and port openings modified in shape.

The same reference'characters where appearing in several figures of the drawings and where A used hereinafter in the description always designate the same respective parts of the device.

Attention is first invited to Fig. 1 and particularly to a building wall or the like I0 provided with an opening I I. Projecting centrally through the wall opening II is a control stem or member I2 which is bifurcated at its forward end. This bifurcated end section of the control member I2 `to the wall I5.

about the pivot pin I3. Thispivotal movement of the cam head I4 causes axialmovement of control stem I2 since the control stem I.2, as will be explained later,- is constantly urged; axially for. wardly by fluid or water pressure andis arrested by the cam head I4 bearing against the inner surface or the base I1. When point 22 upon the cam head I4 is in registry with the bearing point 23 upon the inner surface of the base I1', incident to the handle I5 being in the position shown in Fig. 1, a section of said cam head of sufficient radius will be disposed between the point 23 and the pin I3 as to force control stem I2 far enough backwardly or to the right as to prevent circulation of either hot or cold water throgh the device. When the control handle I5 is pivoted forwardly to the position indicated by the dot-dash line 24, a section of shorter radius ylying between a point 25 on thecam head I4 and the pivot pin I3 will be aligned with the bearing point 23 thereby permitting thev control stem I2 to move forwardly to provide for a maximum circulation of fluid through the device. Y

The shank 2I of controlhandle I5 is fitted slidingly into the opening 25 and thus slides along the edges of said opening incident to pivotal movement about the axis of pin I3 while causing water which is received through conduits 35 and 45 and mixed is dischargedvthrough a conduit 4I. The lvarious ducts and passages through which the water received from the -conduits'35V and 4 5 passes on itsv way through lthe device'prior to `reaching the discharge conduit 4I, willbe described in the ensuing part of the description. j

The cap 34 is secured to the casing I5 by j means of a plurality of stub'bolts 43 of which one is shown inFig. 1. These bolts extend throughv apertured ears 44 spaced about the front endof side wall 42 and are screwed into threaded recesses in ears 45 respectively registering therewith and disposed about the back end of said cap. Ears 45 are illustrated in Figs. 1 and 2. Front end wallA 45 of the casing I5 is seated against a shoulder 41 in `the cap 34 and is held in assembly Y between the cap 34 and the casing side wall 42.

endwise movement ofthe control stem I2. -The control stem I2 is also rotatable to adjust the valve mechanism for regulating the temperature of the water discharged therefrom. This rotative movement of controlstem I2 is obtained by moving the control handle I5 about the axis of said stem. -Meanwhile the shank 2I of said` handle bea-rs against the sides of opening 25 thereby causing the pointer I5 of indicator member I5 to move along an arcuate graduated' scale (not shown) carried upon the front face of an annular dial member 25a. Y

` The dial member 25a rests against a collar v25 which is mounted upon the front side of wall I5, the dial 25a and the collar 25 being suitablyapertured for receiving bolts 21 for' holding the same in place upon the wall I5. Y

' An exteriorly threaded sleeve 25 is disposed about the control stem I2. Sleeve 25 has a ange 25 upon its-forward end. This flange 25 projects into the hollow base I1 of indicator member I5 where it is held in place by an internally thread- Within the cap 34 is a disc-like gasket 45 of rubber or other material capable of withstanding the temperatures of uid controlled by the device.

AThe perspective view, Fig.' 4, of the gasket 45 plainly shows a central opening 45 in said gasket and three radial grooves 55, 5I and 52 formed in one face thereof. Similar grooves extending radially from the opening 45 are provided in the opposite face of the gasket member d in registry withthe grooves 55, 5I, and 52. rooves 55 and 5I divide the gasket member into a sector wherein there are openings 53 and 544 extending entirely through the gasket. Similarly, within the sector between the grooves 5| and 52 there are two openings 55 and 55 also extending through the gasket; and openings 51 and 55 extend completely through-the gasket in that sector defined by radial grooves 55 and 52.

Also contained within the cap 34 is a disclike valve shut-olimember 55. The member 55 ed ring3l which is screwed rmly onto a threaded section 3,5 of the base I1. A nut 32 upon the threaded portion of sleeve 25 is of suiiicient diameter to project into overlapping relation-with the collar 25 so that when said `nut 32 is turned relatively to the sleeve 25 and thus advancedv thereon, the entire unit may be axially adjusted relatively The back end of the sleeve 25 is in threaded relation with a'recess 33 in the front wall of a cap 34 which covers the front wall 45 of the casing I5.

A gland -in the bottom of the recess 33 comprises packing material 35 compressed by a conical washer or the like 35 slidably disposed upon theV stem I2, the degree of compression of the material 35 by the washer 3 5y depending upon the distance sleeve 25 is screwed into the recess 33. A lock-nut31 is provided to maintain a selected adjustment of the sleeve within recess 33. An opening 35 in the back-end of the recess 33 ts closely about control stem I2 and permits both axial and rotative movement of said stem.

lhas a central opening which receives a reduced section-55 of the control stem I2.l 'I'he front side of the shut-off member 55 is held against a shoulder 5I upon the sternV I2 by means of a snap-ring 52 which is contracted into a groove therefor circumscribing said stem. Shoulder 5I` and the snap-ring 52 constrain the valve shut-oi! `member 55 for axial movementwith the stem I2. The back face of the valve shut-oi! member 55 is smooth and flat with the exception of three radial ribs 53, 54, and 55, Fig. 2. which project respectively into the grooves 55, 5I, and 52 in the forward race of gasket member 45. Three radial ribs as 55, Fig. 1, oppositely disposedl with respect to the ribs 53,54, and 55, project for# wardly from end wall 45 into the grooves'as 55,

5I, and 52 upon the back face of gasket member 45. These latter named ribs as- 55 hold the v. gasket member 45 and the valve shut-ot! 1nerli-f-A ber 55 against rotation with the control stem I2 and thus maintain alignment between the openings 53 to 55 inclusive in the gasket member 45 and openings as 51 in the end wall member 45.

`-There is an opening 51 for each of the openings 53 to 45. When the control stem I2 ismoved forwardly with the valve shut-oi! member 55 the ilat face section of themember 55 between ribs 63 and 65 thereof will be carried from the forward ends of the openings 51 a. .i 58 and a pocket will be formed between the ribs 63 and 65 and the side wall of the cap 34 in opposed relation therewith, this pocket being eiective for providing communication between the openings y51 and 58. Atthe same time the ribs 63 and 64 together with the opposed side wall section of the cap 34 will eiect a pocket providing communication between openings 53 and 54. And the ribs 64 and 65 and the opposed side wall section of the cap 34 will form a pocket providing device through conduit 40 is rst introduced into the device through a duct 68, Fig. 5, extending axially forwardly in the casing side wall 42, thence through one of the openings 61 in the f casing end wall 46 and through gasket opening 54, Fig. 2. When the control handle I is pulled forwardly to effect forward movement of the valve shut-off member 59 the openings 54 and 53 will be uncovered and permitted to communicate so that the iluid flowing through opening 54 will pass into openings 53 and thence through a casing end wall opening 61 in registry therewith, and through an axially extending duct 69 in-the casing side wall 42. The duct 69 opens inwardly of the casing side wall 42 through a port near the back end of said side wall; see Figs. 1 and 5.

When the cylindrical valve member 1I is in the position illustrated in Figs. 1 and 5, the water reaches the discharge conduit 4l through the circuit previously described with respect to the water reaching the mixing chamber from the hot water source.

A description will now be given of the automatically controlled means for regulating the device sothat a desired volume and temperature of water discharged through the conduit 4| may be had despite variations in the temperature and pressure of water supplied through the conduits 39 and 40. -Valve member 1| ts closely into the side wall 42 which is cylindrical and is both reciprocable and oscillatable therein. Snap rings 9| and 92 provided interiorly of the valve member 1I provide abutments for the inner ends of coil springs 93 andl 94 o1' which the opposite ends respectively bear against. end walls 46 and 95. Springs 93 and 94 tend to maintain the valve member 1| centered lengthwise of the space between the end walls 46 and 95 and thus function to center the valve member 1| after the closing of the valve shut-oli member 59. Shoulders 96 and 91 upon the interior periphery of the cylindrical valve member 1| at opposite ends of the mixing chamber 19 serve as stops*y against -which end plates 98 and 99 forming end walls of the mixing chamber 19 are held in place by means of snap rings |00 and IOI. The end walls 98 and 99 have openings |02 and |03 into which is inserted a sleeve |04. The sleeve |04 has a cylindrical exterior surface which ts snugly into the openings |02 and |03 to make the mixing chamber duid-tight at such openings. sleeve- |04 may be press-tted into the openings |02 and ,|03 and once assembled in this manner with the mixing chamber end walls remains xed with respect thereto.

' Sleeve |04 is square in cross section on its inner side thereby constraining it to rotate -with 40 the square section |05 of control stem I2 but in duct 69 is permitted to ow from the port 10 through a valve opening 12 into a passage 13 formed in the right end section of the casing The fluid thus admitted into the passage 13 is permitted to escape through a valve opening 14, a discharge port 15, side wall'duct 16, port 11 and opening 18 into a mixing chamber 19 formed within a central section of the cylindrical valve member 1I. Referring now to Fig. 5, the uid thus introduced into the mixing chamber 19 is permitted to flow from suchchamber throughV chamber side wall opening 80 and port 8| in registry therewith in side wall 42. From port 8| the fluid iiows into a duct 82 extending axially through a section of side wall 42, thence through an end wall opening 61 in registry with said duct and through opening 55 in gasket member 48,v

opening 56 of said gasket member, end wall openings 61 which is in registry with the opening 56, discharge duct 83 and thence into the discharge conduit 4I Cold water introduced into the device through conduit 39 passes through a duct 84, an end wall `opening 61 in registry therewith, opening 51 in gasket member 48, opening 58 in said gasket member, a wall opening 61 in registry with the opening 58, side wall duct 85, port 8.6 at the back v permitting it to slide axially of said stem. In Figs. 1 and 3 the sleeve |04 will be seen to have a slot |06 which receives one end |01 of a helical thermostatic element I 08. The opposite end of the element |08 is connected to the valve member 1| in any suitable manner as by means of screws I 09.l

'Ihe end wall 95 of the casing I6 has therein a recess |I0 which serves as a bearing for a bearing member III which carries the back end of the control stem I2. Front end wall 46 of the casing I6 is provided with an opening ||2 for receiving a section of the control stem I2. Said control stem I2 is also received by the opening 49 in the gasket member 48 as well as the opening II3 in the valve'plate 59. Operation of the' device is as follows: When the valve is installed for operation the conduits 39 and 40 [will respectively supply sources ofr cold and hot water under pressure.

While the control handle occupies the position shown in Fig. 1 the cam head I4 will bear against :the base I1 of the'indicator I`8/to force the lcontrol stem I2 and the valve plate 59 rearwardly whereby the latter, incident to projecting its ribs 63,-64, 65 into radial grooves 50, 5|, 52 of the gasket` 48, Will force its rear face ilatly against the front face of said gasket member. In this manner the -openings 51 and 54, Fig. 2, of the gasket member 48 and which are in respective communication with the conduits 39 and 40 will be closed by the-plate 59 as will the openings 58 and 53; There will thus be a double closure of the paths of flow for both the hot and the cold water. That is, the cold water which The.

' v opening 5s.

-by the pressure of water when vthe plate 59 is movedv forwardly iiows froml the conduit 39, through duct 84, Fig. 5, opening Prior to 'permittingv circulation Vof water through the device by the forward movement of 81'andthen through opening 58, willhave its A path closed both. at `the opening 51 and the Likewise, the path for the hot water which when the plate 59 is moved forwardly ows from conduit 49 and thence.

through duct 68, Fig. 5, opening 54 and then through opening 53 will be `closed atl-the point of emergence fromopening 54 and the point of ingress into opening 53. While the valve plate 59 is disposed, rearwardly in its closing position said plate will be-constantly urged forwardly directed thereagainst. through openings 54 and 51. Therefore,

`when the control handle and the cam head' I4 are pivoted counter-clockwise this water pressure directed through the openings 54 and 51 will force the plate 59 andthe control stem I2 forwardly. The amount of water that may then iiow through the openings 54 and 51 may be regulated by the amount of counter-clockwise movement of the control handle- I5 which determines the amount of forward movement of f the valve plate 59. A maximum amount of water will be permitted to flow from opening 51 into Y' opening 58 and from opening 54 into opening 53 whenv the control handle I is pivoted to the limit indicated by the dot-dash line 24.

Hot water,. when-the valve plate 59 is moved forwardly afselectedl amount, will flow rearwardly through gasket opening 53l the end wall opening 61 in registry with the opening 53, side wall duct 69 and` through the port 19, Figs. 1 and-5, and the valve opening 12 into the passage the shut-ofi. plate 59, the operator may preselect the desired temperature of water to be discharged through the conduit 4 I. Such pre-selection of water. temperature, is made by rotating the control stem I2 by means of the handle I5 incident to moving the pointer I9 along the graduated scale on the dial 25a. The pointer I9 is set opposite the desired temperature indicated -by the scale on dial 25a. This rotation of the control stem I2 rotates the sleeve I94 and the relatively stii thermostatic element I98 thereby causing rotation of the cylindrical valve member 1I within the valve chamber wall 42. In this mannerA the valve openings 12, 14, 81, and 89 are so adjusted with respect to theports 19, 15, 86, and 99 that the amount of overlap of these valve openings with -their respective ports will result in correct apportionment of the water received from the hot and cold sources to get the desired temperature of water discharged through the' conduit 4I, providing the temperature of the two sources of water is normal. Should the water at the hot water source be cooler than normal, the resulting mixture in the chamber 19 would initially be cooler than that indicated by the-point- 13 formed between the mixing chamber 19 and the valve chamber end wall 95. At the same time,'cold water flows rearwardly through gasket opening 58, thence through an opening 61 in the end wall 46, duct 85, Fig. 5, port 86 and the valve opening 81 into the passage '88 formed between theforward end wall 46 and the mix- 1 ing chamber 19. Itwill be assumed that the pressures of the hot and cold water supplied to the device are equal while the valve member 1I is centered endwise vof the valve chamber 42 so that the cross sectional areas of the registered or overlapping sections of hot water port 19 and cold water port 88 respectively with the valve openings 12 and 81 associated therewith are equal and while the registered or overlapping sections of discharge ports 15 and 90 respectively vwith the valve openings 14 and 89 associated therewitlrare equal. ists,'thepressure of ui'd in the passages 18 and 88 lacting against the end walls l98 and 98 of the chamber 19 will be opposite and equal and consequently there will be no tendency for When this condition exthe-mixing chamber and the valve member 1I- carrying the same to move axially.` From the passages 13 and 88 Ahot and cold water is discharged into the duct 16 from which such water is introduced into the mixing chamber 19.

While in the mixing chamber 19 the different temperature fluids are thoroughly mixed and brought in contact with the thermostatic ele.

ment |98 prior to being discharged through opening 89 in the side wall of the valve member 1I and the port 8l which is at one end of the duct 82 in chamber side wall 42. The discharge water is carried through the duct 8,2,` thence .through an opening 61 in end wall 46, gasket.

er ISI-upon the dial 25a, but the thermostatic element I98 will respond immediately as follows to correct this discrepancy. The relatively cool water in the mixing chamber 19 causes the element |98, while reacting against the sleeve |94.

increase in inlet capacity of passage 13 and decrease in inlet capacity of passage 88, the valve member shifts the valve openings 14 ,and 89 so as to increase the discharge capacity of passage 13 and decrease the capacity of the passage 88. g In this fashion, the pressures within the passages 13 and 88 remain balanced although-the amount of hot water carried through passage 13 is increased while' he amount of cold water carried 'through passage 88 is decreased. No endwise movement of the valve member 1I occurs. However, with the increased percentage of hot water introduced into the mixing chamber'19, the temperature of the water in such chamber will be increased and the temperature of the water discharged through the conduit 4I will likewise be ,substantially increased to I that temperature/ indicated by the pointer I9 upon thedial 25a. If the temperature of the hot water supply should later increase, this setting of the valve member 1I will be improper since the greater quantity of water from the hot water source now being mixed with the smaller quantity of water from the cold water source would result in a mixture of .too high temperature. But when the temperature of the water in the mixing chamber 19 surpasses that indicated by the, pointer I9 upon the dial 25a, the thermostatic element |98 will oper'ate in the opposite direction as hereinabove described thereby rotating the valvemember 1I counter-clockwise to decrease the inlet and discharge capacities of hot water passage` 13 by partial closing of ports 19'and 15 and to'increase' the inlet and opening 55, gasket opening 56, another of theopenings 81 in the end wall 46, duct 83 and lastly outwardly through vdischarge conduit 4|.

.discharge capacities of passage 88 by partial opening of ports 88 and 99. The amount of rotation of valve member-1I ris a function of the tem- An examination of Fig.

'source can circulate through the device.

aaeaeve perature variation of the mixture in the chainber 19.

Fig. 6 illustrates the relative position of the valve member 1I and -the valve chamber side wall 82 when only cold water from the cold water Such condition may be obtained by setting theV pointer I9 tothe low temperature limit indicated by the vhot water inlet and outlet ports and 15 are uncoveredy so Water can ow only through the hot water passage 13. Ports 86 and 90 for the cold water passage 88 are closed. This position of the valve member 1| may be obtained by rotating the indicator member I8 until the pointer I9 is setto the extreme hot limit indicatedby the scale upon the dial 25a.

Rotative movement of the valve member 1| beyond either of the extreme positions shown in Figs. 6 and 7 is prevented by a pin ||1 abutting against the edges of an opening I |8 therein. Pin I I1 may be screw threaded into a suitable aperture provided in the side wall 42 of the casing I8, the outer end of the pin I|1 including a grooved head II9 to facilitate its being screwed into place.

adjustment of valve member 1| is instantaneous with the pressure change, and although the quantity of discharge is slightly decreased, the quantity ratio of hot and cold water remains the same. As soon as the normal pressure is restored at the water sources the original discharge rate will be resumed. The discharge quantity is variable at any time by rotating the control handle I5 about the axis in pin I3.

Fig. 9 illustrates the valve member 1I atan extreme limit of movement ycaused by. an entirev failure of water pressure at the hot water source. Under such conditions no water pressure would exist in passage 13 thereby permitting the pres-l sure of water in passage 88 to force the-valve member to its extreme right, the limit of movement `being determined by the pin I|1 abutting against an edge of the opening |I8. In the nor- In addition to valve adjustments necessitated by changes in temperature of the water received from the diierent sources, other adjustment is necessary to compensate for the relative changes in pressure of water received from such sources. Sudden pressure changescause sudden changes in the proportioning of the mixture and temperature of the mixture. Substantially instantaneously operating means must be provided .for adjusting the device to compensate for these sudcause'of the relatively great pressure then existing in passage 88, the yalve member 1| would be moved axially to. the rightand incident to this movement to* the right the admittance' capacity and the discharge capacity of passage 13 are increased so that the ratio of the volume of cold water carried through passagev 88 into the mixing chamber 19 to the amount of water carried through the passage 13 into said mixing chamber will remain substantially the same as before the decrease in pressure of the water at the hot water source. In other words, while the inlet and discharge capacities of the passage 13 have been increased the pressure tending to force -let and outlet capacities of said passage. This This action of the valve is obtained by providing ports 15 and 90 with angularly disposed edges |20 and I 2|.

In the present device the primary means for controlling and limiting the axial movement of valve member 1I operates by regulating the pressure in the passages 13 and 88 by virtue of angularly arranged edges |20 and I2I of discharge ports `I5 and 90. This self-regulatory feature o! the device will now be described.

It will be assumed while the device is in use .with the valvemember 1|,positioned as shown in Fig. 5, that a relative increase of pressure occurs in passage 88 because of a relative pressure increase at the cold water source. If the valve openings were permittedv to remain unchanged this condition of pressure would cause too much cold water to now and the mixture would b e cooler -than desired. As aresult of this relative increase of pressure the valve member 1I will begin to move rearwardly or tothe right, Figs. 1 and 5. During this movement the inlet capacity of passage 13 will be increased and likewise the discharge capacity of said passage will be increased,- but because of the angular arrangement of the edge |20 of discharge port 'I5 the increase in the discharge capacity will be less than the increase in the inlet capacity. Therefore, as the there will be a decrease in the inlet and dis--A charge capacities of said passage, but since the edge |2I of discharge port 90 is arranged angularly, as shown, the decrease in discharge capacity of said passage 88` per unit of axial movement of said valve member will be less than the inlet capacity decrease per unit of movement of said valve member. With the discharge capacity'of port 90 decreasing at a less rapid rate than the decrease of inlet capacity of the'port 86 during rearward movement` of the valve member the pressure in passage 88 will correspondingly decrease. The ow "capacity of the passage 88 initially-having the `relatively higher pressure will be decreased while the now capacity of the passage 13 intially having the relatively lower pressure will be increased so as to maintain substan- When there is but a partial devsage Will increase.

tially constant the aggregate volume and the desired relative proportion of hot and cold water conducted into the mixing chamber 19. Eventually the decreasing force of pressure-in passage 88 combined with'the decreasing force of spring 93 becomes equal to the opposing and increasing force of the pressure in passage 13 combined with the increasing force of spring 94 at which time the valve member 1| comes to rest. Inasmuch as the springs 93 and 9i are capable of exerting but a small force upon the valve member 1 I, since their primary function is to center said valve member subsequent to each use of the device, the pressure in passages 13 and 88 is the principal source of energy for imparting endwise movement of said valve member, although the -angularity of the edges |20 and |2| of the ports 15 and 90 willbe such as to function complementally with the springs 93 and 94 in determining the amount of such movement.

The effect of the angularly arranged edges |20 andv |2| of the ports 15 and 90 has been explained under conditions where there. has been a relative increase of pressure in passage 88. These ports also operate for controlling movement of the valve member 1| in the opposite direction when therehas been a relative increase of pressure in passage 13. In this latter case, valve member 1| will begin forward movement and during this movement the inlet and discharge capacities of passage 13 will decrease while the inlet and discharge capacities of passage 88 increase. The discharge capacity of port 15 decreases less rapidly than the inlet capacity of port whereby the pressure in passage 13 will decrease. The discharge capacity of passage 88 increases ata less rapid rate than the inlet capacity thereof so that the pressure in said pas- After the valve member 1| has moved the required distance, the pressures in the passages 88 and 13 as modified by the springs 93 and 94 will strike a balance and valve movement will cease.

From the foregoing it will be understood that the present design of Vthe inlet and outlet ports vfor the passages 13 and 88 is such that rotati've movement of the member 1| can take place for regulating the temperature of the water mixture without disturbing the relative pressure in said passages. In other words, a mere change in temperature of the water from one source without a change in pressure will simply cause the thermostat element |08 to rotate the cylinder 1| whereby both the inlet and outlet capacities of the passages are modied so the pressure in each Apassage remains substantially the same although there is a change in the volume of water passing through them. But because of the pressure stability no endwise movement of the member 1| occurswhich, if it did occur independently of pressure changes at the water sources, would introduce inaccuracy into the rotary temperatureresponsive adjustment. Thus the automatic ro-.

tary adjustment of the member 1| for temperature iiuctuations and the lautomatic endwise adjustment of said member for pressure fluctuations are obtained independently of one another by use of the same valve means. When the cylinder is caused to move endwise to compensate for a relative pressure increase in one of the passages, the pressure in said passages is modified to become equalized so the cylinder will be stopped instead of moving to an extreme limit toward which movement may be started.

Attention is again directed to Fig. 6 where 'the 15 is completely shut 0E so that water within passage 13 cannot flow into the mixing chamber 19. The notch |25 in an edge of valve opening 12 is permitted, however, to register with the port 10 so the passage 13 will have communication with the hot water source and thereby have maintained therein a pressure opposing the pressure of the cold water in passage 88 and in this manner prevent backward endwise movement of the valve member. It will be seen in Fig. 'l that the notch |26 in the valve opening 81 registers with port 86 when theyvalve'member 1| is rotated to the extreme position for permitting the now of only hot water, and during this period of operation the notch |26 provides communication between the passage 88 and the cold water source so that pressure will be maintained in the passage 88 in opposition to the pressure 'in passage 13 thereby preventing forward movement of valve member 1|.

The device will operate as above described to compensate for pressureiluctuations by regulating endwise movement of the valve member 1| if the diagonal edges |20 and |2| of ports 15 and 90 are provided on the valve openings 14 and 89 and said ports are simply rectangular in cross sectional area. Such a structure is illustrated in Fig. 10 where the parts corresponding to those in Fig. 5 are indicated by the same reference character with a prime added. lDiagonal edges on the valve openings 14' and 89' are respectively designated 220 and 22 This modified structure has the advantage of having the more complicated openings with diagonal edges upon a removable part where they are more accessible for machining when initially formed and for later alteration of their shape if desired. Also the operating characteristics of such a valve may be easily changed by replacing valve members as 1| with other valve members in which the diagonal edges 220 and 22| of openings 14' and 89 are disposed at different degrees of angularity.

The circumferential edges of the ports as 15 and of the valve openings as 1.4 may -be regarded as transverse edges since they are disposed transversely of the axial wall elements of the cylindrical mixing chamber whereas the edges as |20 and 220 of these ports and openings that intersect such transverse edges may be regarded as angularly arranged edges since they are disposed obliquely lto the axial wall elements of said mixing chamber. Various arangements of angularity or obliqueness of the intersecting edges upon either the inlet ports or openings or the exhaust ports or openings may be designed for causing the amount of overlap of the discharge openings and ports to change less than the amount of overlap of the iniet openings and ports per unit of axial movement of the mixing chamber.

I am aware that the principles of my invention can be embodied in other structural forms. Corisequently there is no intention that the invention shall be limited to the form hereinabove described with reference to the drawings, but that such invention shall be coextensive with the appended claims.

I claim:

1. In a pressure regulated valve, a casing hav ing-a passage for fluid, valve means operable to control both the admittance and discharge of iiuid into and from saidpassage, and valve actuating means responsive to changes in pressure of uid in said passage and being thus operable upon an increase of' such pressure to actuate said valve means to diminish the admittance capacity for said passage and also to diminish the discharge capacity therefor but to a lesser degree.

2. In a pressure regulated valve, a casing having a passage for fluid, valve means operable to control both the admittance and discharge of uid into and from said passage, and valve actu` ating means responsive to changes in pressure of l fluid in said passage and being thus operable upon a change in said pressure to actuate said valve means to eiect an inverse change in both the admittance and discharge capacities of said passage while eiecting such change to a lesser degree in the discharge capacity.

3. In a pressure regulated valve, a casing having a passage for fluid and inlet and discharge ports for said passage, valve meansfor regulating the degree of opening and closing of said ports, pressure responsive control means for said valve means, said valve control means being disposed for subjection to the pressure of uid in said passage and being operable incident to an increase of pressure in said passage to actuate said valve means for effecting at least a partial closing of said ports While closing the inlet port to a greater degree than the discharge port. j

4. In a pressure regulated valve,- a casing having a passage for 'fluid and inlet and discharge ports for said passage, valve means for `regu lating the degree of opening and closing of said p orts, pressure responsive control means for said valve means, said valve control means being disposed for subjection to changes in fluid pressure in said passage and being operable responsively to an increase of pressure in said passage to actuate the valve means for electing at least a partial closing of 'said ports and opports for said passage, valve means mounted for reversible rectilinear movement and for reversible rotative movement in said passage,` said valve means having an inlet opening normally in overlapping relation wtihA said inlet port and a discharge opening normally in overlapping relation wtih said discharge port,'pressure responsive valve control means disposed for subjection to the pressurev of :duid in said passage and operable to impart rectilinear movement to said valve means in response to pressure changes in said passage to change the amount of Qoverlap of said openings with their respective ports inversely to a change in such pressure, thermostatic means in operable relationgwith said valve means for imparting rotative movement thereto, said thermostatic means being disposed for encountering said fluid and being operable in response to a temperature variation thereof to rotate said valve means for changing the amount of overlap of said openings and their respective ports as a function of such temperature variation. l

7. In a valve for controlling the ow and mixture of fluids of dilerent temperature, a casing having opposite fluid conducting sections respectively for said uds, each of said sections having-'an inlet port and an exhaust charge ports for said passage, valve means hav-I arranged angularly to the line ofA movement of said valve means as an expedient to causing a of the discharge port and its associated opening than the change in the amount of overlap of the inlet port and its associated opening pursuant to a movement ofsaid valve means in either direction.

6. In a valve containing a passage for a -lduid that is susceptible to variation in both pressure and temperature and having inlet and discharge relatively less change in the amount of overlap port, amixing chamber in said casing and reversibly movable rectilinearly between said fluid conducting sections, said mixing chamber presenting opposite of its walls for respective subjection to the fluid in said sections to be urged in opposite directions along the axis of its path of rectilinear movement by the pressure exerted by such fluid, duct means providing communication between each of said exhaust ports and the interior of said mixing chamber, and valve means connected with said mixing chamber for movement therewith, said valve means comprising inlet openings respectively normally in overlapping relation with the inlet ports of said fluid conducting sections and exhaust Yopenings respectively normally in overlapping relation with the exhaust ports of said uid conducting sections, said mixing chamber upon a relative increase of fluid pressure in one of said sections being moved toward the other of said sections, and the openings of said valve means in said one passage being so constructed and arranged with respect to their respective portsy that the overlap of each with its respective /ort is decreased with `such movement and the decrease in the overlap with the inlet port is the greater.

8. In a valve forcontrolling the flow andmixtureof uids of different temperature, a casing having opposite fluidconducting sections respectively for saidfluids, each of said sections having an inlet port and an' exhaust port, a mixing chamber in lsaid casing and reversibly movable rectilinearly between said fluid conducting sections, said mixing chamber presenting opposite of its walls for respective subjection to the uid in said sections to be urged in opposite directions along the axis of its path of rectilinear -movement by the pressure exerted by such fluid,

tively associated with said ports for regulating their now capacity upon movement of said parts with said mixing chamber, the regulating capacity of the parts associated with the inlet ports being greater than that of the parts associated with the exhaust ports, said mixing cham' ber being movable by the pressure of iiuid in either of said fluid conducting sections in which a relative pressure increment occurs toward the other of said sections, and the valve parts for the ports of each section being disposed for decreasing the ow capacity of their ports upon movement of the mixing chamber toward the other section and for increasing the flow capacity of their ports upon movement of the mixing chamber in the opposite direction- 9. A mixing valve comprising a casing having oppositely disposed passages respectively for hot and cold fluid and each passage having an inlet port and a discharge port, a mixing chamber in said casing and having intake and outlet openings, there being'ducts in said casing providing communication between saiddischarge ports and said mixing chamber through the intake opening of said chamber, valve means connected with said chamber,-said valve means including inlet openings respectively normally in overlapping relation with the inlet-ports of said passages and discharge openings respectively normally in overlapping relation with the discharge ports of said passages, said mixing valve being mutually exposed to said passages for subjection to the pressure of fluid therein .and being controllable by such pressure to move toward either of said passages wherein a relative decrease in pressure occurs, said mixing chamber also being rotatable, a manual control member extending intolsaid mixing chamber, and a thermostatic element in said chamber and providing a connection between said control member and said chamber for imparting rotative movement to said chamber and hence to said valve means while reacting against said control member, and the openings in said valve means being so shaped and arranged relatively to their respective ports that upon said movement of the mixing chamber toward either of said passages the amount of overlap of the valve openings with the ports in that passage will be increased as a function of the amount of such movement whereas the amount of overlap of the valve openings with the ports in the other pascold fluid in opposite ends thereof and each passage being provided with an inlet portland an outlet port, thel inlet ports of said passages being respectively communicative with the feeder ducts and the outlet ports of said passages being communicative with the transfer duct, a primary valve structure including sections for conduci tively connecting the open ends of the hot iiuid inlet duct. the cold iiuid inlet duct and the mixture feeder duct respectively with the hot fluid feeder duct, the cold fluid feeder duct and the mixture discharge duct, said primary valve structure also including a valve shut-off member movable axially against the end of said casing in closing relation with the ends of said ducts, a rotatable and axially movable valve control stem having a section operably carrying said valve shut-off member and a section extending axially into said valve casing, a cylindrical mixing chamber in said valve casing and having an opening therein communicating with said transfer duct oi the casing and another opening communicating with said mixture feeder duct, said axially extending section of the valve stem also extending into said mixing chamber, valve means connected with said mixing chamber and having openings respectively disposed in overlapping relation with said ports, said mixing chamber being rotatable in one direction to alter the overlap of said openings and ports to increase the resistance of the device to the flow of hot uid therethrough while decreasing the resistance of the device to the iiow of cold iiuid therethrough and rotatable in the opposite direction to alter the overlap of said openings and ports to decrease the resistance of the device to the ow of hot fluid therethrough while increasing the resistance of the device to the flow of cold fluid therethrough, a thermostatic element in said mixing chamber and connected with said chamber and with the section of the valve stem therein, said thermostatic element serving as a mechanical connecting means between said stem and the mixing chamber whereby the latter may be rotated by manual rotation of said stem to selectively set said valve means, and said element being so arranged be- '.tween said stem and said chamber that when sage will be decreased as a function of the amount of such movement while the amount of change in said overlap of the inlet openings in each of said passages exceeds that of the exhaust openings respectively therein, and the openings in said valve means beingso further shaped and arranged relatively to their respective ports that upon rotative movement of said mixing chamber and hence of said valve means in the direction determined and eiected by said thermostatic element when subjected to a fluid mixture of increased temperature the amount of overlap of the valve openings in the hot fluid passage with their respective ports will be decreased whereas the amount of overlap of the valve openings in the cold uid passage with their respective ports will be increased.

10. A mixing valve device comprising a cylindrical casing having within its side wall a pair of axial inlet ducts respectively for hot and cold fluid, a pair of axial feeder ducts respectively for hot and cold fluid, an axial transfer duct, an axial mixture feeder duct for mixed hot and cold iiuid and an axial mixture discharge duct for mixed hot and cold uid, all of which ducts open at an end of the side wall at one end of said casing with the exception of the transfer duct, said casing also having passages respectively for hot and subjected to uid of increased temperature the distortion of said element effects rotation of rsaid chamber in said one direction and that when subjected to fluid of decreased temperature the distortion of said element effects rotation of said chamber in the opposite direction.

l1. A mixing valve device comprising a cylindrical casing having within its side Wall a pair of axial inlet ductsrespectively for hot and cold fluid, a pair of axial feeder ducts respectively for hot and cold fluid, and an axial transfer duct, all of which ducts open at an end wall at one end of said casing with the exception of the transfer duct, said casing also having passages respectively for hot and cold fluid in opposite ends thereof and each passage being provided with an inlet port and an outlet port, the inlet ports being respectively communicative with the feeder ducts and the outlet ports being communicative with the transfer duct, a primary valve structure including sections for conductively connecting the open ends of the hot liuid inlet duct and of the cold fluid inlet duct respectively With the open ends of the hot fluid feeder duct and of the cold fluid feeder duct, said primary valve structure also including a valve shut-olf member movable axially against the end. of said casing in closing relation with the ends of .aaeaeve i said transfer duct of the casing and having another opening for the dischargeof fluid mixture therefrom, said axially extending section of the valve stem also extending into said mixing chamber, valve means connected with said mixing 'chamber and having openings respectively disposed in overlapping relation with said ports, said mixing chamber being rotatable in one direction to alter the overlap of said openings andk ports to increase the resistance of the device to the ow of hot uid therethrough while decreasing the resistance of the device to the flow of cold fluid therethrough and rotatable in the opposite direction to alter the overlap of said openings and ports todecrease the resistance of the device to the flow of hot uid therethrough While increasing the resistance to the iiow of cold uid therethrough, a thermostatic element in said mixing chamber and connected with said chamberand lwith the section of .the valve stem therein, said thermostatic element serving as a mechanical connecting means between said stem and the mixing chamber whereby the latter may be rotated by manual rotation of said stem to mixing valve, a casing containing a passage having an inlet port and an outlet port, a cylindrical mixing chamber supported for both rotative and axial movement vin said casing, said 'rnixing chamber having intake and exhaust openings, duct means providing communication between said outlet' port and said intake opening, valve means connected with said mixing chamber and 'including openings of which quadrant sections arenormally respectively in overlapping relation with quadrant sections of said ports so that rotation of the mixing chamber in one direction decreases the amount of such overlap whereas rotation of said mixing chamber in the opposite direction increases the amount of such overlap and that axial 'movement in one `direction decreases the amount'of such overlap whereas axial movement in the opposite direction increases the amount of such overlap, a force reaction member in said mixing chamber, a thermostatic element in said mixing chamber andconnected between seid reaction member and said chamber, said thermostatic element being operable when subjected to fluid of increased temperature to rotate said chamber in said one direction while reacting against said reaction member and simi- 13. The combination set forth in claim 12, and wherein said reaction member is' a valve control stem extending axially into said mixing chamber and wherein said thermostatic element serves as a connecting means through which the valve' stem is operable for rotatively setting said mixing chamber and hence said valve means according to a pre-selected temperature of fluid mixture in said chamber.

14. In a pressure and temperature regulated mixing valve, a casing containing a passage having an inlet port and an outlet port, said casing also containing a transfer duct which leads from said outlet port and a feeder duct which leads to said inlet port, a primary valve structure including an axially movable and rotatable valve stem extending into said casing and volume control means connected with said valve stem and oper-able by said stem upon axial movement thereof to regulate the flow of fluid through said feeder duct, a cylindrical mixing chamber supported for both rotative and axial movement in said casing, said mixing chamber having intake and exhaust openings and being communicative with said passage through said intake opening, said transfer duct and said outlet port, valve means connected with said mixing chamber and including openings of which quadrant sections are normally respectively in overlapping relation with quadrant sections of said inlet 4and outlet ports so that rotation of the mixing chamber in one direction decreases the amount of such overlap whereas rotation of said mixing chamber in the opposite direction increases the `amount of such overlap and that axial movement of said mixing chamber in one ldirection decreases the amount of such overlap Whereas axial movement of said mixing chamber in the opposite direction increases the amount of such overlap, said valve stem having a section extending axially into said mixing chamber, a thermostatic element in said mixing chamber and connected nonrotatively to said chamber and to said section of the valve stem to facilitate rotative adjust-- ment of said chamber by rotation of said valve stern, said thermostatic element being operable when subjected to fluid of increased temperature torotate said chamber in said one direction While reacting against said valve stem 'and similarly operable when subjected to fluid of decreasedA temperature to rotate 'said chamber in the opposite direction, said chamber also having an end direction. 4

larly operable when subjected Ito ud of de- 'creased temperature torctate said chamber in the opposite direction, said chamber also having an end section disposed for subjection to the pressure of fluid in said, passage and being'thus movable in said one axial direction upon an' increase of fluid pressure in said passage, and means for urging said mixing. chamber in the opposite direction.

15. In a pressure and temperature regulated mixing valve, a casing containing a passage having an inlet port and an outlet port, a cylindrical mixing chamber supported for both rotative and axial movement in said casing, said mixing chamber' having intake and exhaust openings, duct means providing communication between said outlet port and said intake opening, valve means connected with said mixing chamber and including openings of which substantially quadrant sections are normally respectively in overlapping relation with substantially quadrant sections of said ports, each of Asaid overlapping sections of said ports and valve openings having a transverse edge with respect to the axial Wall elements of rsaid cylindrical mixing" chamber and an edge intersecting such normal edge, said ports and openings being so relatively disposed that rotation of the mixing chamber in one direction decreases the amount of such overlap whereas rotation of said mixing chamber in the opposite direction increases the amount of such overlap and that axial movement of said mixing chamber in onel direction decreases in the amount of such overlap whereas axial movement in the opposite diaeeaeve respectively disposed for subjection to the presrection increases the amount of such overlap, a

being operable when subiected to fluid of increased temperature to rotate said chamber in said one direction whilereacting against said reaction member and similarly operable when subjected to iluid of decreased temperature to' rotate said chamber in the opposite direction, said chamber also having an end section disposed sure of fluid in said passages and being thus movable under control of such fluid. in said one axial direction upon a relative increase of uid pressure in the hot uid passage and movable in the opposite axial direction upon a relative decrease of fluid pressure in said hot -fluid passage.

17. In apparatus including a passage for delivering from a uctuatable pressure source a uid at a rate substantially independently of the fluctuations in said-pressure and under conditions whenl the delivery rate is too slow for the iluid to create a significant back pressure 'at the point of issuance from said passage, the combination of valve means operable to control both the admittance and discharge of the iluid into and for subjection to the pressure-of fluid in said passage and being thus movable in said one axial direction upon an increase of fluid pressure in.

said passage. and at least one ofvsaid intersecting edges of said ports and valve openings being arranged obliquely to the axial wall elements of said mixing chamber to cause the change in overlap between the inlet port and its associated valve opening to exceed the change in overlap of the outlet port and its associated valve opening per unit of axial movementof said mixing chamber.

16. In a pressure and temperature regulated mixing valve. a casing containing opposite passages respectively for hot iluid and cold iluid and each having an inlet port and an outlet port, a cylindrical mixing chamber supported for both rotative and axial movement in said casing .between said passages, said mixing chamber having intake and exhaust openings, duct means providing communication between said passage outlet ports and the mixing chamber intake port, valve means connected with said mixing chamber and including openings of which quadrant sections are normally respectively in overlapping relation with quadrant sections of said ports so that rotation of the mixing chamber in one direction decreases the amount of such overlap with the ports in the hot fluid passage and increases the amount of such overlap with the ports in the cold fluid passage whereas rotation of said chamber in the opposite direction increases the amount oi' such overlap with the ports in the hot fluid passage and decreases the amount ofsuch overlap with the ports in the cold fluid passage and that such axial movement in one direction decreases the amount of suchj vsure of the uid in said passage portion and thus overlap with the ports in the hot fluid passage and increases the amount of such overlap with the ports in the cold fluid passage whereas suchaxial movement in the opposite direction increases the amount of such overlap with the ports in the hot uid passage and decreases the amount of such overlap with the ports in the cold fluid passage, a force reaction member in said mixing chamber, a thermostatic element in said mixing chamber and connected between said reaction member and said chamber, said thermo- `static element being operable when subjected to fluid of increased temperature to rotate said chamber in said one direction while reacting against said reaction member and similarly operable when subjected tc fluid of decreased temperature to rotate said chamber in the opposite direction, said chamber also having end sections from an intermediate portion of said passage whereby the pressure of the iiuidl therein can be regulated Vby relatively adjusting the admittance and discharge capacities thereof, and valve operating means responsive-to changes in presbeing operable upon a change in said pressure to actuate said valve means to effect an inverse change in both the admittance and `discharge capacities ofsaid passage portion to vary the resistance to the flow of fluid through the passage generallyinversely to the pressure at said source and while effecting such change to a lesser degree in the discharge capacitygto stabilize the control of said valve .operating means.

18. In a valve structure for controlling the ilow and mixture of fluids of different character, fluid conducting passages respectively for said fluids, each of said passages having an inlet port and an exhaust port, valve parts respectively associated with ,said ports and relatively movable with respect thereto to regulate their flow capacity, the regulating effect of the parts associated with the inlet ports being greater than that of those associated with the outlet ports, pressure responsive actuating means operably connected with said valve parts to effect the regulatory movement thereof, said actuating means being responsive to the pressure in .each of said passages and operable upon a relative increase in pressure in either passage to decrease the flow capacity of the ports associated therewith and to simultaneously increase the flow capacity of the ports associated with the other pas- Sage.

19. In a valveiontaining a'passage for delivery of a fluid that is susceptible to variation in pressure, valve means operable to control both the admittance and discharge of the fluid into and from an intermediate portion of said passagevv whereby the pressure of iiuid in said passage portion can be regulated by adjusting the admittance and discharge capacities thereof, and valve operating means responsive to the pressure in said passage portion and being thus operable to change both the admittance and discharge capacities thereof as aninverse function of a change in pressure therein to vary the resistance aaeacvs 20. In a valve structure for controlling the ow and mixture of uids of diierent character, fluid conducting passages respectively for said huids, valve means operable to control both the admittance andA discharge of the fluid into and from intermediate portions of said passages whereby the pressure in each intermediate passage portion can be regulated by adjusting the I tion to vary the resistance of each passage to the ow of iiuid therethrough generally inversely to the relative change of pressure'therein, and

said valve means also being operable in eiecting such .changes in the admittance and discharge capacities of each passage to vary the pressure therein as a direct function respectively of the increase or decrease in its admittance and discharge capacities to stabilize the control of the pressure responsive valve operating means.

21. In a valve containing a passage for delivery of a uid from asburce that is susceptible to variation in pressure and having inlet and discharge ports for said passage, adjustable valve means having an inlet opening normally in overlapping relation with said inlet port and a discharge opening normally in overlapping vrelation with said 'discharge port, pressure responsive valve control means responsive -to .the pressure of uiei in said passage and operablefto adjust said valv e means to change the amount of overlap of uid conducting passages for directing respective of said uids into said chamber and each having an inlet port and an exhaust port, rotatable and axially adjustable valve means including parts respectively associated with said ports for regulating their flow capacity, said valve means when adjusted rotatively in one direction being actuative of said parts to decrease the ow capacity of the ports in one passage while increasing the iiow capacity of the ports in the other passage, and when rotated in the opposite direction being actuative of said parts to respectively increaseand decrease the flow capacity of the ports in said one and other passages, said valve means when adjusted axially in one directidn being actuative of said parts to respectively increase and decrease the flowV capacity of the ports in said one and other passages and when adjusted axially in the otherv direction being actuative of said parts to respectively decrease and increase the iiow capacity of the ports in said one and other I passages, temperature responsive means operablel saic openings with their respective ports iriversely with respect to a change in such pressure, and said ports and openings being of such relative contour that the overlap of the discharge port and opening incurs less change than thatv of the inlet port and opening pursuant to said adjustment. e

22. In a valve structure for controlling the flow and mixture of uids of diilerent temperature, a mixing chamber for said fluids, a Vfluid conducting passage for directing one of said iiuids into said mixing chamber and having an inlet port and an exhaust port, a rotatable and axially adjustable valve member including parts respectively associated with said ports for regulating their ow capacity, said parts being effective to respectively increase and decrease the now capacity of said ports when said member is rotatively adjusted in opposite directions and also to respectively increase and decrease such now capacity when said member is axially adjusted in opposite directions, means responsive to the pressure in said passage to effect one character of the aforesaid adjustments to said valve member for changing the ow capacity of said ports inversely with a change of pressure in said passage, and means responsive tothe temperature of the fluids mixed to rotatively adjust said valve means in the direction to cause variation in the ow capacity of the hot water passage ports inversely with temperature changes of uid mixed in said chamber, and means responsive to changes in the relative pressure in said passages to axially adjust said valve means in the direction to decrease the ow capacity ofthe ports pertaining to the passage wherein a relatively .increased pressure occurs, and the regulating effect of the valve parts associated with the Aexhaust ports being less than that of the valve parts associated with the inlet ports pursuant to said axial adjustment.

24. In a pressure and temperature regulated mixing valve, a casing containing a passage having an inlet port and an outlet port,`a cylindrical mixing chamber supported for both rotative and axial adjustment in -said casing, said mixing chamber having intake and exhaust openings and being communicative with said outlet portv through saidv intakeopening; valve parts respectively associated -with said ports. for regulating their iiow capacity and connected with said mixing chamber for regulation in accordance with `the adjustment thereof, said valve parts beingl eiective to respectively increase and decrease the prsuantto such axial adjustment, manually adjustable force reaction means in the mixing chamber, a thermostatic elementin said chamin said chamber to effect the other character of Y aforesaid adjustments to said valve member in accordance with a temperature change in such mixed'fiuid, and the regulating effect of the part associated with the inlet port being greater than 23. In a valve structure for vcontrolling the flow and mixture of fluids of diii'erenttemperature, a mixing chamber for said uids, opposite ber and connected between said chamber and said force reaction means to provide a mechanical connection through which said chamber can be manually rotatively adjusted, said thermo-- static element being operable when subjected to uid of changed temperature to rotatively adjust said chamber in the direction for regulating the `flow capacity of said ports so the volume of uid passed thereby'will be changed to counteract such temperature change, said chamber also being subjected to the pressure of fluid in said passage tollgllllROYN.HERMANN'. 

